Liquid crystal lens module, driving method thereof, and display device

Abstract

A liquid crystal lens module, a driving method thereof and a display device. The driving method of the liquid crystal lens module comprises: applying a common voltage signal to a second electrode (3) and applying a driving signal to a first electrode (2) to control liquid crystals in a liquid crystal layer (4) to deflect to form a liquid crystal lens; wherein the driving signal applied to the first electrode (2) specifically comprises: in adjacent two frames of pictures, applying driving signals with opposite polarities to the first electrode (2) in the same liquid crystal lens unit (1); in the same frame of picture, applying driving signals with the same polarity to a plurality of first sub-electrodes (5) in the same first electrode group (6), applying driving signals with the same polarity to a plurality of first sub-electrodes (5) in the same second electrode group (7), applying a positive voltage driving signal to part of the first sub-electrodes (5) in all the first sub-electrodes (5) in the liquid crystal lens module, and applying a negative voltage driving signal to the remaining first sub-electrodes in all the first sub-electrodes (5) in the liquid crystal lens module.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display, in particular to a liquid crystal lens module, a driving method thereof and a display device. BACKGROUND

[0002] 3D display technology can provide a stereoscopic display picture for human eyes. Liquid crystal lens has excellent performance, can be electrically focused, and is widely applied to focusing equipment and human eye magnifying equipment, especially has a prominent role in 3D display. The application of liquid crystal lens can get rid of the restraint of 3D glasses on human eyes, achieve naked-eye 3D display, and realize arbitrary switching of 2D / 3D display modes, and has a huge application prospect in the future. SUMMARY

[0003] The driving method of the liquid crystal lens module provided by the embodiments of the present disclosure includes: a plurality of liquid crystal lens units arranged in an array; each of the plurality of liquid crystal lens units includes: a first electrode and a second electrode arranged oppositely, and a liquid crystal layer located between the first electrode and the second electrode; the first electrode includes: a plurality of first sub-electrodes arranged along a first direction and extending along a second direction, the first direction intersecting the second direction; the plurality of first sub-electrodes are divided into: a first electrode group and a second electrode group located on two sides of a center of the liquid crystal lens unit respectively; the driving method includes:

[0004] applying a common voltage signal to the second electrode and applying a driving signal to the first electrode to control the liquid crystals in the liquid crystal layer to deflect to form a liquid crystal lens; wherein

[0005] applying the driving signal to the first electrode specifically includes:

[0006] In adjacent two frames of pictures, the driving signal applied to the first electrode in the same liquid crystal lens unit has opposite polarities.

[0007] In the same frame of picture, the driving signal applied to the plurality of first sub-electrodes in the same first electrode group has the same polarity, the driving signal applied to the plurality of first sub-electrodes in the same second electrode group has the same polarity, a positive voltage driving signal is applied to part of the plurality of first sub-electrodes in the liquid crystal lens module, and a negative voltage driving signal is applied to the remaining plurality of first sub-electrodes in the liquid crystal lens module.

[0008] In some embodiments, the driving signal applied to the first electrode further includes:

[0009] In the same frame of picture, the driving signal applied to the first electrode group and the second electrode group in each liquid crystal lens unit has opposite polarities.

[0010] In some embodiments, in the first direction, two adjacent liquid crystal lens units share the first sub-electrode at the abutting position; the method further comprises:

[0011] In the same frame, in the first direction, the first electrode group and the second electrode group located in different liquid crystal lens units and adjacent to each other are applied with driving signals of the same polarity.

[0012] In some embodiments, the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit columns extending in the second direction and arranged in the first direction; the method further comprises:

[0013] In the same frame, the first electrode group in the same liquid crystal lens unit column is applied with driving signals of the same polarity, and the second electrode group in the same liquid crystal lens unit column is applied with driving signals of the same polarity.

[0014] In some embodiments, the first electrodes in the plurality of liquid crystal lens units are independently arranged, and the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit columns extending in the second direction and arranged in the first direction; the method further comprises:

[0015] In the same frame, the first electrode group in the same liquid crystal lens unit column is applied with driving signals of the same polarity, and the second electrode group in the same liquid crystal lens unit column is applied with driving signals of the same polarity.

[0016] In some embodiments, the first electrodes in the plurality of liquid crystal lens units are independently arranged, and the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit columns extending in the second direction and arranged in the first direction; the plurality of liquid crystal lens units are further divided into a plurality of liquid crystal lens unit groups arranged in the second direction, each liquid crystal lens unit group comprising a plurality of liquid crystal lens unit rows extending in the first direction; the method further comprises:

[0017] In the same frame, the first electrode group in the same liquid crystal lens unit column and located in the same liquid crystal lens unit group is applied with driving signals of the same polarity, and the second electrode group in the same liquid crystal lens unit column and located in the same liquid crystal lens unit group is applied with driving signals of the same polarity; and the first electrode group in the same liquid crystal lens unit column and located in adjacent liquid crystal lens unit groups is applied with driving signals of opposite polarity, and the second electrode group in the same liquid crystal lens unit column and located in adjacent liquid crystal lens unit groups is applied with driving signals of opposite polarity.

[0018] In some embodiments, the first electrodes in the plurality of liquid crystal lens units are independently arranged, and the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit rows extending in the first direction and arranged in the second direction; the method further comprises:

[0019] In the same frame, the same polarity of driving signals is applied to each first sub-electrode in the same row of liquid crystal lens units, and the opposite polarity of driving signals is applied to each first sub-electrode in the adjacent row of liquid crystal lens units.

[0020] In some embodiments, the first electrodes in the plurality of liquid crystal lens units are independently arranged, the plurality of liquid crystal lens units are divided into a plurality of groups of liquid crystal lens units arranged along the second direction, each group of liquid crystal lens units includes a plurality of rows of liquid crystal lens units extending along the first direction;

[0021] The driving signal applied to the first electrode further includes:

[0022] In the same frame, the same polarity of driving signals is applied to each first sub-electrode in the same group of liquid crystal lens units, and the opposite polarity of driving signals is applied to each first sub-electrode in the adjacent two groups of liquid crystal lens units.

[0023] In some embodiments, the first electrodes in the plurality of liquid crystal lens units are independently arranged, the driving signal applied to the first electrode further includes:

[0024] In the same frame, the same polarity of driving signals is applied to each first sub-electrode in the same row of liquid crystal lens units, and the opposite polarity of driving signals is applied to each first sub-electrode in the adjacent row of liquid crystal lens units.

[0025] In some embodiments, the first electrode further includes: a third electrode group between the first electrode group and the second electrode group; the driving signal applied to the first electrode further includes:

[0026] A common voltage signal is applied to the third electrode group.

[0027] In some embodiments, the third electrode group includes at least one second sub-electrode extending along the second direction; the center of the liquid crystal lens unit falls within the projection of the second sub-electrode in the third electrode group on the liquid crystal layer; the common voltage signal applied to the third electrode group specifically includes:

[0028] The common voltage signal is applied to the second sub-electrode.

[0029] In some embodiments, the common voltage signal is a zero voltage signal.

[0030] In some embodiments, the first electrode group and the second electrode group include the same number of first sub-electrodes; the absolute value of the driving voltage applied by each first sub-electrode is distributed with a preset gradient from the center of the liquid crystal lens unit to the two edges.

[0031] This disclosure provides a liquid crystal lens module, comprising: a plurality of liquid crystal lens units arranged in an array; each of the plurality of liquid crystal lens units includes: a first electrode and a second electrode disposed opposite to each other, and a liquid crystal layer located between the first electrode and the second electrode; the first electrode includes: a plurality of first sub-electrodes arranged along a first direction and extending along a second direction, the first direction intersecting the second direction; the plurality of first sub-electrodes are divided into: a first electrode group and a second electrode group respectively located on both sides of the center of the liquid crystal lens unit; the liquid crystal lens module is driven by the method provided in this disclosure.

[0032] An embodiment of this disclosure provides a display device, including: a display panel, and a liquid crystal lens module provided in this disclosure located on the display side of the display panel. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the structure of a liquid crystal lens module provided in an embodiment of the present disclosure;

[0035] Figure 2 This is a schematic diagram of another liquid crystal lens module provided in an embodiment of the present disclosure;

[0036] Figure 3 Provided for the embodiments of this disclosure Figure 1 or Figure 2 Cross-sectional view of AA';

[0037] Figure 4 This is a schematic diagram of a driving method for a liquid crystal lens module provided in an embodiment of the present disclosure;

[0038] Figure 5 This is a schematic diagram of another driving method for a liquid crystal lens module provided in an embodiment of the present disclosure;

[0039] Figure 6 A schematic diagram of another driving method for a liquid crystal lens module provided in this disclosure embodiment;

[0040] Figure 7 This is a schematic diagram of another driving method for a liquid crystal lens module provided in an embodiment of the present disclosure;

[0041] Figure 8 This is a schematic diagram of another driving method for a liquid crystal lens module provided in an embodiment of the present disclosure;

[0042] Figure 9 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0043] Figure 10 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0044] Figure 11 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0045] Figure 12 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0046] Figure 13 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0047] Figure 14 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0048] Figure 15 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0049] Figure 16 A driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0050] Figure 17 A timing diagram of the driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is shown in the schematic diagram.

[0051] Figure 18 A structure schematic diagram of the display device provided by the embodiment of the present disclosure is shown in the schematic diagram. DETAILED DESCRIPTION

[0052] In order to make the purpose, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be described clearly and completely below with reference to the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all the embodiments. And in the case of no conflict, the embodiments in the present disclosure and the features in the embodiments can be combined with each other. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative labor belong to the scope of protection of the present disclosure.

[0053] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “first,” “second,” and similar terms used in this disclosure do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as “comprising” or “including” mean that an element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as “connected” or “linked” are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect.

[0054] It should be noted that the dimensions and shapes of the figures in the accompanying drawings do not reflect actual proportions and are intended only to illustrate the content of this disclosure. Furthermore, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout.

[0055] The design of liquid crystal lens modules in related technologies requires driving the liquid crystal to deflect through pixel electrodes and common electrodes to form a lens shape. In order to avoid liquid crystal polarization, the positive and negative voltages of the driving signal need to be flipped. However, during the flipping process of the driving signal, a capacitor is formed between the pixel electrode and the common electrode. When the pixel electrode voltage changes rapidly, the voltage of the common electrode will change instantaneously to maintain the voltage difference of the capacitor. Since the common electrode has a power input, the voltage changes slowly and eventually equals the voltage signal of the power supply. That is, there is a problem of common electrode signal disturbance during the flipping process of the positive and negative voltages of the driving signal, which can easily cause deviation of the liquid crystal lens shape and generate crosstalk in 3D display.

[0056] This disclosure provides a driving method for a liquid crystal lens module, such as... Figure 1 , Figure 2 , Figure 3 As shown, the liquid crystal lens module includes: a plurality of liquid crystal lens units 1 arranged in an array; each of the plurality of liquid crystal lens units 1 includes: a first electrode 2 and a second electrode 3 disposed opposite to each other, and a liquid crystal layer 4 located between the first electrode 2 and the second electrode 3; the first electrode 2 includes: a plurality of first sub-electrodes 5 arranged along a first direction X and extending along a second direction Y, the first direction X intersecting the second direction Y; the plurality of first sub-electrodes 5 are divided into: a first electrode group 6 and a second electrode group 7 located on both sides of the center of the liquid crystal lens unit 1 respectively; as shown Figure 4 As shown, the driving method includes:

[0057] S101, A common voltage signal is applied to the second electrode, and a driving signal is applied to the first electrode to control the deflection of the liquid crystal in the liquid crystal layer to form a liquid crystal lens; wherein...

[0058] Applying a driving signal to the first electrode specifically includes:

[0059] In two adjacent frames, driving signals of opposite polarity are applied to the first electrode in the same liquid crystal lens unit;

[0060] In the same frame, driving signals of the same polarity are applied to multiple first sub-electrodes in the same first electrode group, driving signals of the same polarity are applied to multiple first sub-electrodes in the same second electrode group, positive pressure driving signals are applied to some of the first sub-electrodes in all the first sub-electrodes in the liquid crystal lens module, and negative pressure driving signals are applied to the remaining first sub-electrodes in all the first sub-electrodes in the liquid crystal lens module.

[0061] The driving method for a liquid crystal lens module provided in this disclosure applies driving signals of opposite polarity to the first electrode in the same liquid crystal lens unit in two adjacent frames, thereby avoiding liquid crystal polarization. Furthermore, in the same frame, a positive voltage driving signal is applied to a portion of the first sub-electrodes of all the first sub-electrodes in the liquid crystal lens module, and a negative voltage driving signal is applied to the remaining first sub-electrodes. Since the common voltage signal disturbance signals caused by the positive and negative voltage signals are in opposite directions, the recovery time of the driving signal of the second electrode is short, and the superposition effect is approximately disturbance-free, thereby preventing changes in the morphology of the liquid crystal lens. When the liquid crystal lens module is applied to a display product, it can avoid affecting the display effect.

[0062] It should be noted that, Figure 1 , Figure 2 The image shows only one column of liquid crystal lens units 1, with the first direction X perpendicular to the second direction Y. In a specific implementation, the first sub-electrode is a strip electrode extending along the second direction Y. Figure 3 For example, it could be along Figure 1 or Figure 2 The cross-sectional view of AA' is shown, with dashed line 8 representing the line connecting the centers of the liquid crystal lens units.

[0063] In specific implementation, such as Figure 1 As shown, each strip-shaped first sub-electrode 5 corresponds to a column of liquid crystal lens units 1 in the second direction Y, that is, a column of liquid crystal lens units 1 in the second direction Y corresponds to the same first electrode group 6 and the same second electrode group 7. Or, as Figure 2 As shown, the first electrodes 2 in the multiple liquid crystal lens units 1 are arranged independently of each other, that is, the first sub-electrodes 5 in the multiple liquid crystal lens units 1 are arranged independently of each other.

[0064] In practical implementation, when the liquid crystal lens module is applied to a display product, in 3D display mode, a common voltage signal is applied to the second electrode and a driving signal is applied to the first electrode to control the liquid crystal in the liquid crystal layer to deflect and form a liquid crystal lens.

[0065] In some embodiments, such asFigure 1 、 Figure 2 、 Figure 3 As shown in FIG. 6, the first electrode group 6 and the second electrode group 7 include the same number of first sub-electrodes 5; the absolute value of the driving voltage applied by each first sub-electrode is distributed in a preset gradient from the center of the liquid crystal lens unit to the two edges.

[0066] In a specific implementation, different electric field strengths can be generated at different positions by applying voltages with different absolute values to the first sub-electrodes at the different positions, so that the liquid crystal molecules in the liquid crystal layer corresponding to the different positions are deflected to different degrees, thereby causing the liquid crystal layer to have a lens effect. Figure 3 In the figure, the dashed line 9 represents the liquid crystal lens formed by the deflection of the liquid crystal.

[0067] In a specific implementation, when the liquid crystal molecules are positive liquid crystal molecules, the absolute value of the voltage of the driving signal applied by each first sub-electrode gradually increases from the center of the liquid crystal lens unit to the two edges; when the liquid crystal molecules are negative liquid crystal molecules, the absolute value of the voltage of the driving signal applied by each first sub-electrode gradually decreases from the center of the liquid crystal lens unit to the two edges.

[0068] In a specific implementation, by applying a voltage to the first electrode and the second electrode in the liquid crystal lens, an electric field is formed between the first electrode and the second electrode, and under the action of the electric field, the refractive index of the liquid crystal layer changes, thereby the focal length of the liquid crystal lens unit can be adjusted.

[0069] In a specific implementation, the center of the liquid crystal lens unit coincides with the center of the liquid crystal lens formed by the deflection of the liquid crystal. The position of half the aperture of the liquid crystal lens is the center position of the liquid crystal lens.

[0070] In some embodiments, as shown in FIG. 7, the first electrode group 6 and the second electrode group 7 include different numbers of first sub-electrodes 5; the absolute value of the voltage of the driving signal applied by each first sub-electrode is distributed in a preset gradient from the center of the liquid crystal lens unit to the two edges. Figure 1 、 Figure 2 、 Figure 3 As shown in FIG. 6, the first electrode group 6 and the second electrode group 7 include the same number of first sub-electrodes 5; the absolute value of the voltage of the driving signal applied by each first sub-electrode is distributed in a preset gradient from the center of the liquid crystal lens unit to the two edges.

[0071] That is, from the center to the edge of the liquid crystal lens unit, the first electrode group includes the first first sub-electrode to the nth first sub-electrode in turn, and the second electrode group includes the first first sub-electrode to the nth first sub-electrode in turn, n is an integer greater than 1; the i-th first sub-electrode in the first electrode group and the i-th first sub-electrode in the second electrode group are symmetric with respect to the center of the liquid crystal lens unit; the absolute value of the voltage of the driving signal applied to the i-th first sub-electrode in the first electrode group is equal to the absolute value of the voltage of the driving signal applied to the i-th first sub-electrode in the second electrode group, where 1≤i≤n. Figure 3 As shown in the liquid crystal lens module, the first sub-electrode 5 in the first electrode group 6 is numbered a~f, and the first sub-electrode 5 in the second electrode group 7 is numbered a'~f'. In the same frame, the absolute value of the driving signal voltage of the first sub-electrode numbered a is equal to the absolute value of the driving signal voltage of the first sub-electrode numbered a', the absolute value of the driving signal voltage of the first sub-electrode numbered b is equal to the absolute value of the driving signal voltage of the first sub-electrode numbered b', the absolute value of the driving signal voltage of the first sub-electrode numbered c is equal to the absolute value of the driving signal voltage of the first sub-electrode numbered c', the absolute value of the driving signal voltage of the first sub-electrode numbered d is equal to the absolute value of the driving signal voltage of the first sub-electrode numbered d', the absolute value of the driving signal voltage of the first sub-electrode numbered e is equal to the absolute value of the driving signal voltage of the first sub-electrode numbered e', and the absolute value of the driving signal voltage of the first sub-electrode numbered f is equal to the absolute value of the driving signal voltage of the first sub-electrode numbered f'.

[0072] In some embodiments, the driving signal is applied to the first electrode, further comprising:

[0073] In the same frame, as shown in Figure 5 , Figure 6 , the first electrode group 6 and the second electrode group 7 in each liquid crystal lens unit 1 are applied with driving signals of opposite polarity.

[0074] It should be noted that Figure 5 , Figure 6 For example, corresponding to the mth frame and the m+1th frame, m is a positive integer.

[0075] In specific implementation, as shown in Figure 5 , Figure 6 For a certain frame, for one of the liquid crystal lens units 1, a positive voltage driving signal can be applied to the first sub-electrode 5 in the first electrode group 6, and a negative voltage driving signal can be applied to the first sub-electrode 5 in the second electrode group 7, or a negative voltage driving signal can be applied to the first sub-electrode 5 in the first electrode group 6, and a positive voltage driving signal can be applied to the first sub-electrode 5 in the second electrode group 7. In specific implementation, for one of the liquid crystal lens units 1, as shown in Figure 5As shown, if in the current frame, a positive voltage driving signal is applied to the first sub-electrode 5 in the first electrode group 6 and a negative voltage driving signal is applied to the first sub-electrode 5 in the second electrode group 7, then in the next frame, as shown, a negative voltage driving signal is applied to the first sub-electrode 5 in the first electrode group 6 and a positive voltage driving signal is applied to the first sub-electrode 5 in the second electrode group 7. Figure 6 As shown, a negative voltage driving signal is applied to the first sub-electrode 5 in the first electrode group 6 and a positive voltage driving signal is applied to the first sub-electrode 5 in the second electrode group 7.

[0076] In some embodiments, as shown in the first direction X, the adjacent two liquid crystal lens units 1 share the first sub-electrode 5 at the abutting position; the driving signal applied to the first electrode further comprises: Figure 5 、 Figure 6 As shown in the first direction X, the adjacent two liquid crystal lens units 1 share the first sub-electrode 5 at the abutting position; the driving signal applied to the first electrode further comprises:

[0077] In the same frame, in the first direction X, the first electrode group 6 and the second electrode group 7 located in different liquid crystal lens units 1 and adjacent to each other are applied with driving signals of the same polarity.

[0078] It should be noted that in specific implementation, the adjacent two liquid crystal lens units share the first sub-electrode at the abutting position, so that the number of first sub-electrodes and the number of signal lines of the first sub-electrodes can be saved, and the area of the liquid crystal lens module can be effectively utilized.

[0079] The driving method provided by the embodiments of the present disclosure is that in the same frame, the driving signals applied to the first electrode group and the second electrode group in the same liquid crystal lens unit are of opposite polarities, and the driving signals applied to the first electrode group and the second electrode group in different liquid crystal lens units and adjacent to each other are of the same polarity, so that the liquid crystal polarization and the common voltage signal disturbance can be avoided, and the first sub-electrode shared at the abutting position can be conveniently driven in reverse.

[0080] In some embodiments, as shown in the first direction X, the adjacent two liquid crystal lens units 1 share the first sub-electrode 5 at the abutting position; the driving signal applied to the first electrode further comprises: Figure 7 、 Figure 8 As shown, the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit columns 13 extending along the second direction Y and arranged along the first direction X; the driving signal applied to the first electrode further comprises:

[0081] In the same frame, the first electrode group 6 in the same liquid crystal lens unit column 13 is applied with driving signals of the same polarity, and the second electrode group 7 in the same liquid crystal lens unit column 13 is applied with driving signals of the same polarity.

[0082] That is, the driving method of the liquid crystal lens module provided by the embodiments of the present disclosure is column inversion driving. The driving method provided by the embodiments of the present disclosure adopts column inversion driving for the liquid crystal lens module, which can save power consumption while avoiding liquid crystal polarization and common voltage signal disturbance.

[0083] In practical implementation, for example, for a column of liquid crystal lens units, if in the current frame, a positive voltage driving signal is applied to the first electrode group and a negative voltage driving signal is applied to the second electrode group in that column, then in the next frame, a negative voltage driving signal is applied to the first electrode group and a positive voltage driving signal is applied to the second electrode group. In practical implementation, the driving signals are applied to the liquid crystal lens units in each odd-numbered column in the same way, and to each even-numbered column in the same way. The driving signals are applied to the liquid crystal lens units in the odd-numbered columns in the opposite way to those in the even-numbered columns. In other words, in each odd-numbered column of liquid crystal lens units, the first electrode group has the same polarity of the driving signal applied, and the second electrode group has the same polarity of the driving signal applied; in each even-numbered column of liquid crystal lens units, the first electrode group has the same polarity of the driving signal applied, and the second electrode group has the same polarity of the driving signal applied; the polarity of the driving signal applied to the first electrode group in the odd-numbered column of liquid crystal lens units is opposite to that in the even-numbered column of liquid crystal lens units, and the polarity of the driving signal applied to the second electrode group in the odd-numbered column of liquid crystal lens units is opposite to that in the even-numbered column of liquid crystal lens units.

[0084] In some embodiments, such as Figure 9 As shown, the first electrodes 2 in the plurality of liquid crystal lens units 1 are independently arranged, that is, the first sub-electrodes 5 in the plurality of liquid crystal lens units 1 are independently arranged; the plurality of liquid crystal lens units 1 are divided into a plurality of liquid crystal lens unit columns 13 extending along the second direction Y and arranged along the first direction X; applying a driving signal to the first electrode further includes:

[0085] In the same frame, driving signals with opposite polarities are applied to adjacent first electrode groups 6 in the same liquid crystal lens unit column 13, and driving signals with opposite polarities are applied to adjacent second electrode groups 7 in the same liquid crystal lens unit column 13.

[0086] In specific implementation, such as Figure 9 As shown, in the same frame, driving signals of opposite polarity are applied to the first electrode group 6 and the second electrode group 7 in each liquid crystal lens unit 1, and driving signals of the same polarity are applied to the first electrode group 6 and the second electrode group 7 located in different liquid crystal lens units 1 and adjacent to each other in the first direction X. Figure 9As shown, in the same liquid crystal lens unit column 13, the driving signal applied to each liquid crystal lens unit 1 in the odd rows is applied in the same way, the driving signal applied to each liquid crystal lens unit 1 in the even rows is applied in the same way, and the driving signal applied to each liquid crystal lens unit 1 in the odd rows is applied in the opposite way to the driving signal applied to each liquid crystal lens unit 1 in the even rows. That is, the polarities of the driving signal applied to the first electrode group 6 in each liquid crystal lens unit 1 in the odd rows are the same, the polarities of the driving signal applied to the second electrode group 7 in each liquid crystal lens unit 1 in the odd rows are the same, the polarities of the driving signal applied to the first electrode group 6 in each liquid crystal lens unit 1 in the even rows are the same, the polarities of the driving signal applied to the second electrode group 7 in each liquid crystal lens unit 1 in the even rows are the same, the polarities of the driving signal applied to the first electrode group 6 in each liquid crystal lens unit 1 in the odd rows are opposite to the polarities of the driving signal applied to the first electrode group 6 in each liquid crystal lens unit 1 in the even rows, and the polarities of the driving signal applied to the second electrode group 7 in each liquid crystal lens unit 1 in the odd rows are opposite to the polarities of the driving signal applied to the second electrode group 7 in each liquid crystal lens unit 1 in the even rows.

[0087] The driving method shown in the embodiment of the present disclosure, in which the driving signal applied to the first sub-electrode in any adjacent liquid crystal lens unit is applied in different ways, can further shorten the driving signal recovery time, avoid common voltage signal disturbance, and further improve the display effect. Figure 9 In some embodiments, as shown in the embodiment of the present disclosure, the first electrodes 2 in the plurality of liquid crystal lens units 1 are independently arranged, that is, the first sub-electrodes 5 in the plurality of liquid crystal lens units 1 are independently arranged; the plurality of liquid crystal lens units 1 are divided into a plurality of liquid crystal lens unit columns 13 extending along the second direction Y and arranged along the first direction X; the plurality of liquid crystal lens units 1 are also divided into a plurality of liquid crystal lens unit groups 14 arranged along the second direction Y, each liquid crystal lens unit group 14 including a plurality of liquid crystal lens unit rows 15 extending along the first direction X; and the driving signal applied to the first electrode further includes:

[0088] Figure 10 In the same frame, the driving signal applied to the first electrode group 6 in the same liquid crystal lens unit column 13 and located in the same liquid crystal lens unit group 14 is of the same polarity, and the driving signal applied to the second electrode group 7 in the same liquid crystal lens unit column 13 and located in the same liquid crystal lens unit group 14 is of the same polarity; and the driving signal applied to the first electrode group 6 in the same liquid crystal lens unit column 13 and located in adjacent liquid crystal lens unit groups 14 is of opposite polarity, and the driving signal applied to the second electrode group 7 in the same liquid crystal lens unit column 13 and located in adjacent liquid crystal lens unit groups 14 is of opposite polarity.

[0089] In the specific implementation, as shown in the embodiment of the present disclosure, the first electrodes 2 in the plurality of liquid crystal lens units 1 are independently arranged, that is, the first sub-electrodes 5 in the plurality of liquid crystal lens units 1 are independently arranged; the plurality of liquid crystal lens units 1 are divided into a plurality of liquid crystal lens unit columns 13 extending along the second direction Y and arranged along the first direction X; the plurality of liquid crystal lens units 1 are also divided into a plurality of liquid crystal lens unit groups 14 arranged along the second direction Y, each liquid crystal lens unit group 14 including a plurality of liquid crystal lens unit rows 15 extending along the first direction X; the driving signal applied to the first electrode further includes:

[0090] In the specific implementation, as shown in the embodiment of the present disclosure, the first electrodes 2 in the plurality of liquid crystal lens units 1 are independently arranged, that is, the first sub-electrodes 5 in the plurality of liquid crystal lens units 1 are independently arranged; the plurality of liquid crystal lens units 1 are divided into a plurality of liquid crystal lens unit columns 13 extending along the second direction Y and arranged along the first direction X; the plurality of liquid crystal lens units 1 are also divided into a plurality of liquid crystal lens unit groups 14 arranged along the second direction Y, each liquid crystal lens unit group 14 including a plurality of liquid crystal lens unit rows 15 extending along the first direction X; the driving signal applied to the first electrode further includes: Figure 10 ​As shown, in the same frame, driving signals of opposite polarity are applied to the first electrode group 6 and the second electrode group 7 in each liquid crystal lens unit 1, and driving signals of the same polarity are applied to the first electrode group 6 and the second electrode group 7 located in different liquid crystal lens units 1 and adjacent to each other in the first direction X. Figure 10 As shown, in the same liquid crystal lens unit column 13, the liquid crystal lens unit 1 located in the odd-numbered liquid crystal lens unit group 14 applies the driving signal in the same way, the liquid crystal lens unit 1 located in the even-numbered liquid crystal lens unit group 14 applies the driving signal in the same way, and the liquid crystal lens unit 1 located in the odd-numbered liquid crystal lens unit group 14 applies the driving signal in the opposite way to the liquid crystal lens unit 1 located in the even-numbered liquid crystal lens unit group 14. Specifically, the polarity of the driving signal applied to the first electrode group 6 in each liquid crystal lens unit 1 of the odd-numbered liquid crystal lens unit group 14 is the same, and the polarity of the driving signal applied to the second electrode group 7 is the same. The polarity of the driving signal applied to the first electrode group 6 in each liquid crystal lens unit 1 of the even-numbered liquid crystal lens unit group 14 is the same, and the polarity of the driving signal applied to the second electrode group 7 in each liquid crystal lens unit 1 of the odd-numbered liquid crystal lens unit group 14 is opposite to that of the driving signal applied to the first electrode group 6 in each liquid crystal lens unit 1 of the even-numbered liquid crystal lens unit group 14. The polarity of the driving signal applied to the second electrode group 7 in each liquid crystal lens unit 1 of the odd-numbered liquid crystal lens unit group 14 is opposite to that of the driving signal applied to the second electrode group 7 in each liquid crystal lens unit 1 of the even-numbered liquid crystal lens unit group 14.

[0091] It should be noted that, Figure 10 The example provided illustrates that each liquid crystal lens unit group 14 includes two rows of liquid crystal lens units 15. In actual implementation, each liquid crystal lens unit group may include more rows of liquid crystal lens units.

[0092] The driving method provided in this disclosure applies driving signals to the first sub-electrode of the liquid crystal lens unit in any two adjacent liquid crystal lens unit groups in different ways, while applying driving signals to the first sub-electrode of the liquid crystal lens unit in the same liquid crystal lens unit group in the same way. This can avoid increasing power consumption while shortening the driving signal recovery time.

[0093] In some embodiments, such as Figure 11 As shown, the first electrodes 2 in the plurality of liquid crystal lens units 1 are independently arranged, that is, the first sub-electrodes 5 in the plurality of liquid crystal lens units 1 are independently arranged; the plurality of liquid crystal lens units 1 are divided into a plurality of liquid crystal lens unit rows 15 extending along the first direction X and arranged along the second direction Y; applying a driving signal to the first electrode further includes:

[0094] In the same frame, the same polarity driving signal is applied to each first sub-electrode 5 in the same liquid crystal lens unit row 15, and the opposite polarity driving signal is applied to each first sub-electrode 5 in the adjacent liquid crystal lens unit row 15.

[0095] In a specific implementation, for example, in the current frame, a positive voltage driving signal is applied to each first sub-electrode in the odd liquid crystal lens unit row, and a negative voltage driving signal is applied to each first sub-electrode in the even liquid crystal lens unit row; in the next frame, a negative voltage driving signal is applied to each first sub-electrode in the odd liquid crystal lens unit row, and a positive voltage driving signal is applied to each first sub-electrode in the even liquid crystal lens unit row.

[0096] That is, the driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is row inversion driving. The driving method provided by the embodiment of the present disclosure can save power consumption while avoiding liquid crystal polarization and avoiding disturbance of the common voltage signal by adopting row inversion driving for the liquid crystal lens module.

[0097] In some embodiments, as shown in Figure 12 The first electrodes 2 in the plurality of liquid crystal lens units 1 are independently arranged, that is, the first sub-electrodes 5 in the plurality of liquid crystal lens units 1 are independently arranged; the plurality of liquid crystal lens units 1 are divided into a plurality of liquid crystal lens unit groups 14 arranged along the second direction Y, each liquid crystal lens unit group 14 including a plurality of liquid crystal lens unit rows 15 extending along the first direction X;

[0098] The method further includes:

[0099] In the same frame, the same polarity driving signal is applied to each first sub-electrode 5 in the same liquid crystal lens unit group 14, and the opposite polarity driving signal is applied to each first sub-electrode 5 in the adjacent two liquid crystal lens unit groups 14.

[0100] That is, the driving method of the liquid crystal lens module provided by the embodiment of the present disclosure is point inversion driving. The driving method provided by the embodiment of the present disclosure can further shorten the driving signal recovery time, avoid disturbance of the common voltage signal, and further improve the display effect by adopting point inversion driving for the liquid crystal lens module.

[0101] In a specific implementation, for example, in the current frame, a positive voltage driving signal is applied to each first sub-electrode in the odd liquid crystal lens unit row, and a negative voltage driving signal is applied to each first sub-electrode in the even liquid crystal lens unit row; in the next frame, a negative voltage driving signal is applied to each first sub-electrode in the odd liquid crystal lens unit row, and a positive voltage driving signal is applied to each first sub-electrode in the even liquid crystal lens unit row.

[0102] It should be noted that, Figure 12The example provided illustrates that each liquid crystal lens unit group 14 includes two rows of liquid crystal lens units 15. In actual implementation, each liquid crystal lens unit group may include more rows of liquid crystal lens units.

[0103] In some embodiments, such as Figure 13 As shown, the first electrodes 2 in the multiple liquid crystal lens units 1 are independently arranged, that is, the first sub-electrodes 5 in the multiple liquid crystal lens units 1 are independently arranged; applying a driving signal to the first electrode further includes:

[0104] In the same frame, a driving signal of the same polarity is applied to the first sub-electrode 5 in the same liquid crystal lens unit 1, and a driving signal of opposite polarity is applied to the first sub-electrode 5 in adjacent liquid crystal lens units 1.

[0105] In specific implementation, such as Figure 13 As shown, for example, adjacent liquid crystal lens units along the first direction do not share the first sub-electrode at adjacent locations.

[0106] It should be noted that, Figures 1-13 Taking the example where the first electrode of each liquid crystal lens unit only includes the first sub-electrode, that is, the first electrode of each liquid crystal lens unit includes an even number of strip sub-electrodes. Of course, in specific implementations, the first electrode of each liquid crystal lens unit may also include an odd number of strip sub-electrodes.

[0107] In some embodiments, such as Figure 14 As shown, the first electrode 2 further includes: a third electrode group 16 located between the first electrode group 6 and the second electrode group 7; applying a driving signal to the first electrode further includes:

[0108] A common voltage signal is applied to the third electrode group.

[0109] In some embodiments, such as Figure 14 As shown, the third electrode group 16 includes at least one second sub-electrode 17 extending along the second direction Y; the orthographic projection of the center 9 of the liquid crystal lens unit 1 onto the liquid crystal layer 1 falls into the orthographic projection of one of the second sub-electrodes 17 in the third electrode group onto the liquid crystal layer; applying a common voltage signal to the third electrode group specifically includes:

[0110] A common voltage signal is applied to the second sub-electrode.

[0111] It should be noted that, Figure 14 The example is given by taking the third electrode group 1, which includes a second sub-electrode 17 extending along the second direction Y.

[0112] It should be noted that the first sub-electrode and the second sub-electrode are formed using the same material and process. For example... Figure 15As shown, when each strip-shaped first sub-electrode 5 corresponds to a column of liquid crystal lens units in the second direction Y, when each strip-shaped second sub-electrode 17 also corresponds to a column of liquid crystal lens units in the second direction Y, the length of each strip-shaped first sub-electrode 5 and each strip-shaped second sub-electrode 17 in the second direction Y is equal. Alternatively, as shown, the second sub-electrodes 17 in the plurality of liquid crystal lens units 1 are independently arranged. Figure 16

[0113] It should be noted that no matter how the second sub-electrode is arranged, no matter which inversion driving mode is adopted, the driving signal applied by the second sub-electrode is a common voltage signal, that is, the second sub-electrode and the second electrode apply the same driving signal.

[0114] It should be noted that, Figure 15 Figure 16 For example, in the same frame, the driving signal applied to the first electrode group 6 and the second electrode group 7 in each liquid crystal lens unit 1 has opposite polarities, and in the first direction X, the driving signal applied to the first electrode group 6 and the second electrode group 7 located in different liquid crystal lens units 1 and adjacent has the same polarity. In specific implementation, when the first electrode further includes the second sub-electrode, the driving mode of the first sub-electrode can adopt any one of the modes in Figures 7-13

[0115] In some embodiments, the common voltage signal is a zero voltage signal.

[0116] Based on the same inventive concept, the embodiments of the disclosure also provide a liquid crystal lens module, as shown in Figure 1 Figure 2 Figure 3 As shown, the liquid crystal lens module includes: a plurality of array-arranged liquid crystal lens units 1; each of the plurality of liquid crystal lens units 1 includes: a first electrode 2 and a second electrode 3 arranged oppositely, a liquid crystal layer 4 located between the first electrode 2 and the second electrode 3; the first electrode 2 includes: a plurality of first sub-electrodes 5 arranged along a first direction X and extending along a second direction Y, the first direction X and the second direction Y intersect; the plurality of first sub-electrodes 5 are divided into: a first electrode group 6 and a second electrode group 7 located on both sides of the center of the liquid crystal lens unit 1; the liquid crystal lens module is driven by the method provided by the embodiments of the disclosure.

[0117] In some embodiments, as shown in Figure 1 Figure 2 Figure 3 As shown, the first electrode group 6 and the second electrode group 7 include the same number of first sub-electrodes 5; the first electrode group 6 and the second electrode group 7 are symmetrically arranged on both sides of the center 9 of the liquid crystal lens unit.

[0118] In specific implementation, as shown in Figure 1 ,​​​​​​​Figure 2 , Figure 3 As shown, the widths of each first sub-electrode 5 in the first direction X are all equal, the distances between the first sub-electrodes 5 in the first electrode group 6 are equal, and the distances between the first sub-electrodes 5 in the second electrode group 7 are equal. Of course, in specific implementations, the widths of each first sub-electrode may not be completely equal, and the distances between adjacent first sub-electrodes may not be equal.

[0119] In some embodiments, such as Figure 2 As shown, in the second direction, the lengths of each first sub-electrode 5 are equal, and the distances between adjacent first sub-electrodes 5 are equal.

[0120] Of course, in practice, the lengths of the first sub-electrodes in the second direction may not be equal, and the distances between adjacent first sub-electrodes may not be equal.

[0121] In some embodiments, such as Figures 14-16 As shown, the first electrode 2 also includes a second sub-electrode 17.

[0122] In some embodiments, the width of the first sub-electrode is equal to the width of the second sub-electrode. Alternatively, the widths of the first sub-electrode and the second sub-electrode may not be equal.

[0123] In some embodiments, the second electrodes in the plurality of liquid crystal lens units are integrally connected. That is, the second electrode is a planar electrode.

[0124] In some embodiments, both the first electrode and the second electrode are transparent electrodes. The material of the transparent electrode includes, for example, indium tin oxide (ITO).

[0125] In some embodiments, such as Figure 3 As shown, the liquid crystal lens module also includes: a first substrate 10, a second substrate 11, and a protective layer 12.

[0126] In a specific implementation, the first substrate, the first electrode, and the protective layer constitute the lower substrate, i.e., the first electrode and the protective layer are sequentially disposed on the first substrate. The second substrate and the second electrode constitute the upper substrate, i.e., the second electrode is disposed on the second substrate. In a specific implementation, liquid crystal is injected into the upper and lower substrates using a cell alignment process to obtain a liquid crystal lens module. In a specific implementation, alignment layers may also be disposed on the side of the liquid crystal layer facing the lower substrate and the side of the liquid crystal layer facing the upper substrate.

[0127] In some embodiments, the liquid crystal lens module further includes a signal line electrically connected to the first electrode.

[0128] In a specific implementation, for a case where one column of liquid crystal lens units corresponds to one strip-shaped first sub-electrode, the signal line can be electrically connected to the first sub-electrode at either end of the extension direction of the strip-shaped first sub-electrode. For a case where the first electrodes corresponding to multiple liquid crystal lens units are independently arranged, for example, each row of liquid crystal lens units is electrically connected to a group of signal lines, which can be arranged in the area between adjacent rows of liquid crystal lens units, for example, and the number of each group of signal lines can be the same as the number of first sub-electrodes in the first electrode group.

[0129] It should be noted that in a specific implementation, different parameters of the liquid crystal lens module and voltage changes of the driving signal can be designed according to different 3D design schemes. Next, the structure parameters of different liquid crystal lens modules and the driving signals are exemplarily introduced. The structure parameters of different liquid crystal lens modules are shown in Table 1, and the absolute values of the driving signal voltages of the first electrodes in one liquid crystal lens unit in different liquid crystal lens modules are shown in Tables 2-5. In Table 1, the number of sub-electrodes refers to the sum of the number of first sub-electrodes and the number of second sub-electrodes included in each first electrode. When the number of sub-electrodes is even, the first electrode only includes first sub-electrodes. When the number of sub-electrodes is odd, the first electrode includes one second sub-electrode and the rest are first sub-electrodes. Tables 2-5 correspond to Case 1-Case 4 in Table 1, respectively. In Tables 2 and 4, electrode numbers 1-11 correspond to the first sub-electrodes in the first electrode group, electrode numbers 13-23 correspond to the first sub-electrodes in the second electrode group, electrode number 12 corresponds to the second sub-electrode, electrode numbers 11 and 13 are the first sub-electrodes closest to the center of the liquid crystal lens unit, and electrode numbers 1 and 23 are the first sub-electrodes at the edge of the liquid crystal lens unit. In Tables 3 and 5, electrode numbers 1-6 correspond to the first sub-electrodes in the first electrode group, electrode numbers 7-12 correspond to the first sub-electrodes in the second electrode group, electrode numbers 6 and 7 are the first sub-electrodes closest to the center of the liquid crystal lens unit, and electrode numbers 1 and 12 are the first sub-electrodes at the edge of the liquid crystal lens unit.

[0130] Table 1

[0131] Case 1 Case 2 Case 3 Case 4 Lens aperture (microns) 155.82 77.055 155.82 77.055 Lens focal length (microns) 850 570 725 485 Liquid crystal layer thickness (microns) 23.3 12.5 23.3 12.5 Number of sub-electrodes 23 12 23 12 Sub-electrode period (microns) 7.08 7.005 7.08 7.005 Sub-electrode width (microns) 4 4 4 4

[0132] Table 2

[0133]

[0134] Table 3

[0135]

[0136] Table 4

[0137]

[0138]

[0139] Table V

[0140]

[0141] In the liquid crystal lens module shown in Figure 3 the driving frequency is, for example, 60 Hz, and the polarity of the driving signal voltage is reversed every 16.7 ms, Figure 3 the driving signal timing diagram of the first electrode group in the liquid crystal lens module shown in Figure 17 It should be noted that, Figure 3 the numbers of the first sub-electrodes in the first electrode group are a-f, and the numbers of the first sub-electrodes in the second electrode group are a'-f', and in the same frame, the absolute values of the voltages of the first sub-electrodes corresponding to a'-f' are equal to the absolute values of the voltages of the first sub-electrodes corresponding to a-f, respectively.

[0142] The display device provided by the embodiments of the present disclosure, as shown in Figure 18 includes a display panel 18 and a liquid crystal lens module 19 provided by the embodiments of the present disclosure located on the display side of the display panel 18.

[0143] In specific implementation, the display device provided by the embodiments of the present disclosure can realize switching between 2D display mode and 3D display mode. In the 2D display mode, the liquid crystal lens module can be controlled to normally transmit light, and in the 3D display mode, the driving method of the liquid crystal lens module provided by the embodiments of the present disclosure can be used to drive the liquid crystal lens unit array in the liquid crystal lens module to form a liquid crystal lens.

[0144] In some embodiments, the display panel is a liquid crystal display panel. When the display panel is a liquid crystal display panel, the display device can further include a backlight module located on the side of the display panel away from the liquid crystal lens module.

[0145] In some embodiments, the display panel is an electroluminescent display panel, for example, an organic light-emitting diode display panel or a quantum dot light-emitting diode display panel.

[0146] In some embodiments, as shown in Figure 18 the display device further includes a bonding adhesive 20 located between the display panel 18 and the liquid crystal lens module 19. That is, the display panel and the liquid crystal lens module are bonded by the bonding adhesive.

[0147] In some embodiments, the display panel includes a plurality of pixel units arranged in an array, and each liquid crystal lens unit corresponds to at least one pixel unit.

[0148] The display device provided by the embodiments of the present disclosure is any product or component with display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator, and the like. Other essential components of the display device are understood by those skilled in the art and are not described herein again, and should not be considered as a limitation on the present disclosure. The implementation of the display device can refer to the above embodiments of the display panel, and the repeated parts are not described again.

[0149] In summary, the liquid crystal lens module and the driving method thereof and the display device provided by the embodiments of the present disclosure can avoid liquid crystal polarization phenomenon by applying driving signals with opposite polarities to the first electrodes in the same liquid crystal lens unit in adjacent two frames of pictures. In the same frame of picture, positive voltage driving signals are applied to part of the first sub-electrodes in the liquid crystal lens module, and negative voltage driving signals are applied to the rest of the first sub-electrodes in the liquid crystal lens module. Since the disturbance signals of the common voltage signals caused by the positive voltage signals and the negative voltage signals are in opposite directions, the driving signal recovery time of the second electrode is short, and the superposition effect is approximately not disturbed, so that the liquid crystal lens topography can be avoided from changing, and when the liquid crystal lens module is applied to a display product, the display effect can be avoided from being affected.

[0150] Although the preferred embodiments of the present application have been described, those skilled in the art can make further changes and modifications to these embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the present application.

[0151] Obviously, those skilled in the art can make various modifications and variations to the embodiments of the present application without departing from the spirit and scope of the embodiments of the present application. Thus, if these modifications and variations of the embodiments of the present application fall within the scope of the claims of the present application and their equivalent technologies, the present application is also intended to include these modifications and variations.

Claims

1. A driving method for a liquid crystal lens module, wherein, The liquid crystal lens module includes: a plurality of liquid crystal lens units arranged in an array; each of the plurality of liquid crystal lens units includes: a first electrode and a second electrode disposed opposite to each other, and a liquid crystal layer located between the first electrode and the second electrode; the first electrode includes: a plurality of first sub-electrodes arranged along a first direction and extending along a second direction, the first direction intersecting the second direction; the plurality of first sub-electrodes are divided into: a first electrode group and a second electrode group respectively located on both sides of the center of the liquid crystal lens unit; the method includes: A common voltage signal is applied to the second electrode, and a driving signal is applied to the first electrode to control the deflection of the liquid crystal in the liquid crystal layer to form a liquid crystal lens; wherein, Applying a driving signal to the first electrode specifically includes: In two adjacent frames, driving signals of opposite polarity are applied to the first electrode in the same liquid crystal lens unit; In the same frame, a driving signal of the same polarity is applied to multiple first sub-electrodes in the same first electrode group, a driving signal of the same polarity is applied to multiple first sub-electrodes in the same second electrode group, a positive pressure driving signal is applied to some of the first sub-electrodes in all the first sub-electrodes in the liquid crystal lens module, and a negative pressure driving signal is applied to the remaining first sub-electrodes in all the first sub-electrodes in the liquid crystal lens module.

2. The method according to claim 1, wherein, Applying a drive signal to the first electrode further includes: In the same frame, driving signals of opposite polarity are applied to the first electrode group and the second electrode group in each of the liquid crystal lens units.

3. The method according to claim 2, wherein, In the first direction, two adjacent liquid crystal lens units share a first sub-electrode at an adjacent position; Applying a drive signal to the first electrode further includes: In the same frame, in the first direction, a driving signal of the same polarity is applied to the first electrode group and the second electrode group, which are located in different liquid crystal lens units and are adjacent to each other.

4. The method according to claim 3, wherein, The plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit columns extending along the second direction and arranged along the first direction; applying a driving signal to the first electrode further includes: In the same frame, a driving signal of the same polarity is applied to the first electrode group in the same array of liquid crystal lens units, and a driving signal of the same polarity is applied to the second electrode group in the same array of liquid crystal lens units.

5. The method according to claim 2 or 3, wherein, The first electrodes in the plurality of liquid crystal lens units are independently disposed, and the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit columns extending along the second direction and arranged along the first direction; applying a driving signal to the first electrode further includes: In the same frame, driving signals of opposite polarity are applied to adjacent first electrode groups in the same liquid crystal lens unit column, and driving signals of opposite polarity are applied to adjacent second electrode groups in the same liquid crystal lens unit column.

6. The method according to claim 2 or 3, wherein, The first electrodes in the plurality of liquid crystal lens units are independently disposed, and the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit columns extending along the second direction and arranged along the first direction; the plurality of liquid crystal lens units are further divided into a plurality of liquid crystal lens unit groups arranged along the second direction, each liquid crystal lens unit group including a plurality of liquid crystal lens unit rows extending along the first direction; applying a driving signal to the first electrode further includes: In the same frame, a driving signal of the same polarity is applied to the first electrode group located in the same liquid crystal lens unit group within the same liquid crystal lens unit column, and a driving signal of the same polarity is applied to the second electrode group located in the same liquid crystal lens unit group within the same liquid crystal lens unit column; and a driving signal of opposite polarity is applied to the first electrode group located in adjacent liquid crystal lens unit groups within the same liquid crystal lens unit column, and a driving signal of opposite polarity is applied to the second electrode group located in adjacent liquid crystal lens unit groups within the same liquid crystal lens unit column.

7. The method according to claim 1, wherein, The first electrodes in the plurality of liquid crystal lens units are independently disposed, and the plurality of liquid crystal lens units are divided into a plurality of rows of liquid crystal lens units extending along the first direction and arranged along the second direction; applying a driving signal to the first electrode further includes: In the same frame, a driving signal of the same polarity is applied to each of the first sub-electrodes in the same row of liquid crystal lens units, and a driving signal of opposite polarity is applied to each of the first sub-electrodes in adjacent rows of liquid crystal lens units.

8. The method according to claim 1, wherein, The first electrodes in the plurality of liquid crystal lens units are independently arranged, and the plurality of liquid crystal lens units are divided into a plurality of liquid crystal lens unit groups arranged along the second direction. Each liquid crystal lens unit group includes a plurality of liquid crystal lens unit rows extending along the first direction. Applying a drive signal to the first electrode further includes: In the same frame, driving signals of the same polarity are applied to the first sub-electrode in the same liquid crystal lens unit group, and driving signals of opposite polarity are applied to the first sub-electrode in two adjacent liquid crystal lens unit groups.

9. The method according to claim 1, wherein, The first electrodes in the plurality of liquid crystal lens units are independently arranged, and the application of a driving signal to the first electrodes further includes: In the same frame, driving signals of the same polarity are applied to the first sub-electrode in the same liquid crystal lens unit, and driving signals of opposite polarity are applied to the first sub-electrode in adjacent liquid crystal lens units.

10. The method according to any one of claims 1-4 and 7-9, wherein, The first electrode further includes: a third electrode group located between the first electrode group and the second electrode group; applying a driving signal to the first electrode further includes: The common voltage signal is applied to the third electrode group.

11. The method according to claim 10, wherein, The third electrode group includes at least one second sub-electrode extending along the second direction; the orthogonal projection of the center of the liquid crystal lens unit onto the liquid crystal layer falls into the orthogonal projection of one of the second sub-electrodes in the third electrode group onto the liquid crystal layer. Applying the common voltage signal to the third electrode group specifically includes: The common voltage signal is applied to the second sub-electrode.

12. The method according to any one of claims 1-4, 7-9, and 11, wherein, The common voltage signal is a zero-voltage signal.

13. The method according to any one of claims 1-4, 7-9, and 11, wherein, The first electrode group and the second electrode group include the same number of first sub-electrodes; from the center of the liquid crystal lens unit to the two edges, the absolute value of the driving voltage applied to each first sub-electrode is distributed according to a preset gradient.

14. A liquid crystal lens module, wherein, The liquid crystal lens module includes: a plurality of liquid crystal lens units arranged in an array; each of the plurality of liquid crystal lens units includes: a first electrode and a second electrode disposed opposite to each other, and a liquid crystal layer located between the first electrode and the second electrode; the first electrode includes: a plurality of first sub-electrodes arranged along a first direction and extending along a second direction, the first direction intersecting the second direction; the plurality of first sub-electrodes are divided into: a first electrode group and a second electrode group respectively located on both sides of the center of the liquid crystal lens unit; the liquid crystal lens module is driven by the method according to any one of claims 1 to 13.

15. A display device, wherein, The display device includes: a display panel, and a liquid crystal lens module according to claim 14 located on the display side of the display panel.

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